The amygdala is popularly referred to as the brain's "fear center," due to the central role it plays in regulating the body's fear response. So pivotal is this small, almond-shaped structure's involvement, that S.M. (a woman whose amygdala has been ravaged by a rare condition known as Urbach–Wiethe disease), has been… »2/04/13 6:40am 2/04/13 6:40am